Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure

doi:10.1088/1674-1056/ac92d3

中国物理B ›› 2023, Vol. 32 ›› Issue (3): 37304-037304.doi: 10.1088/1674-1056/ac92d3

Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure

Cong Wang(王聪) and Xiao-Qi Wang(王晓琦)^†

Basic Department, Yingkou Institute of Technology, Yingkou 115014, China

收稿日期:2022-02-17 修回日期:2022-09-10 接受日期:2022-09-19 出版日期:2023-02-14 发布日期:2023-03-03
通讯作者: Xiao-Qi Wang E-mail:yklgwxq@163.com
基金资助:
Project supported by High-level talents research project of Yingkou Institute of Technology (Grant No. YJRC202027) and the Natural Science Foundation of Liaoning Province of China (Grant No. 2020-BS-287).

Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure

Cong Wang(王聪) and Xiao-Qi Wang(王晓琦)^†

Basic Department, Yingkou Institute of Technology, Yingkou 115014, China

Received:2022-02-17 Revised:2022-09-10 Accepted:2022-09-19 Online:2023-02-14 Published:2023-03-03
Contact: Xiao-Qi Wang E-mail:yklgwxq@163.com
Supported by:
Project supported by High-level talents research project of Yingkou Institute of Technology (Grant No. YJRC202027) and the Natural Science Foundation of Liaoning Province of China (Grant No. 2020-BS-287).

摘要/Abstract

摘要： The thermoelectric effect of the system is theoretically investigated, by coupling Majorana zero mode to the T-typed double-quantum-dot-structure in different ways. It is found that when a single Majorana zero mode is coupled to one of the quantum dots (QDs), the thermoelectric efficiency is suppressed due to the leakage of Majorana zero modes into the QDs. When the Majorana zero mode is coupled to QD2, the suppression of the thermoelectric efficiency is more serious than that of QD1. Furthermore, when two Majorana zero modes are introduced simultaneously, suppression of the thermoelectric effect still takes place. We believe that such results can be candidates for the detection of Majorana bound states and help us understand the role of Majorana zero mode in thermoelectricity.

关键词: Majorana bound state, thermoelectricity, quantum dots, figure of merit

Abstract: The thermoelectric effect of the system is theoretically investigated, by coupling Majorana zero mode to the T-typed double-quantum-dot-structure in different ways. It is found that when a single Majorana zero mode is coupled to one of the quantum dots (QDs), the thermoelectric efficiency is suppressed due to the leakage of Majorana zero modes into the QDs. When the Majorana zero mode is coupled to QD2, the suppression of the thermoelectric efficiency is more serious than that of QD1. Furthermore, when two Majorana zero modes are introduced simultaneously, suppression of the thermoelectric effect still takes place. We believe that such results can be candidates for the detection of Majorana bound states and help us understand the role of Majorana zero mode in thermoelectricity.

Key words: Majorana bound state, thermoelectricity, quantum dots, figure of merit

中图分类号: (Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems)

73.21.-b

74.45.+c (Proximity effects; Andreev reflection; SN and SNS junctions) 74.55.+v (Tunneling phenomena: single particle tunneling and STM) 72.10.Bg (General formulation of transport theory)

Cong Wang(王聪) and Xiao-Qi Wang(王晓琦). Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure[J]. 中国物理B, 2023, 32(3): 37304-037304.

Cong Wang(王聪) and Xiao-Qi Wang(王晓琦). Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure[J]. Chin. Phys. B, 2023, 32(3): 37304-037304.

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Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure

Thermoelectric signature of Majorana zero modes in a T-typed double-quantum-dot structure

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